TY - JOUR
T1 - Lysophosphatidic acid (LPA) receptors of the EDG family are differentially activated by LPA species. Structure-activity relationship of cloned LPA receptors
AU - Bandoh, Koji
AU - Aoki, Junken
AU - Taira, Akitsu
AU - Tsujimoto, Masafumi
AU - Arai, Hiroyuki
AU - Inoue, Keizo
N1 - Copyright:
Copyright 2007 Elsevier B.V., All rights reserved.
PY - 2000/7/28
Y1 - 2000/7/28
N2 - We examined the structure-activity relationship of cloned lysophosphatidic acid (LPA) receptors (endothelial cell differentiation gene (EDG) 2, EDG4, and EDG7) by measuring [Ca2+](i) in Sf9 insect cells expressing each receptor using LPA with various acyl chains bound at either the sn-1 or the sn-2 position of the glycerol backbone. For EDG7 the highest reactivity was observed with LPA with Δ9-unsaturated fatty acid (oleic (18:1), linoleic (18:2), and linolenic (18:3)) at sn-2 followed by 2-palmitoleoyl (16:1) and 2-arachidonoyl (20:4) LPA. In contrast, EDG2 and EDG4 showed broad ligand specificities, although EDG2 and EDG4 discriminated between 14:0 (myristoyl) and 16:0 (palmitoyl), and 12:0 (lauroyl) and 14:0 LPAs, respectively. EDG7 recognizes the cis double bond at the Δ9 position of octadecanoyl residues, since 2-elaidoyl (18:1, trans) and 2-petroselinoyl (18:1, cis-Δ12) LPA were poor ligands for EDG7. In conclusion, the present study demonstrates that each LPA receptor can be activated differentially by the LPA species. Copyright (C) 2000 Federation of European Biochemical Societies.
AB - We examined the structure-activity relationship of cloned lysophosphatidic acid (LPA) receptors (endothelial cell differentiation gene (EDG) 2, EDG4, and EDG7) by measuring [Ca2+](i) in Sf9 insect cells expressing each receptor using LPA with various acyl chains bound at either the sn-1 or the sn-2 position of the glycerol backbone. For EDG7 the highest reactivity was observed with LPA with Δ9-unsaturated fatty acid (oleic (18:1), linoleic (18:2), and linolenic (18:3)) at sn-2 followed by 2-palmitoleoyl (16:1) and 2-arachidonoyl (20:4) LPA. In contrast, EDG2 and EDG4 showed broad ligand specificities, although EDG2 and EDG4 discriminated between 14:0 (myristoyl) and 16:0 (palmitoyl), and 12:0 (lauroyl) and 14:0 LPAs, respectively. EDG7 recognizes the cis double bond at the Δ9 position of octadecanoyl residues, since 2-elaidoyl (18:1, trans) and 2-petroselinoyl (18:1, cis-Δ12) LPA were poor ligands for EDG7. In conclusion, the present study demonstrates that each LPA receptor can be activated differentially by the LPA species. Copyright (C) 2000 Federation of European Biochemical Societies.
KW - EDG2
KW - EDG4
KW - EDG7
KW - Endothelial cell differentiation gene family
KW - Lysophosphatidic acid
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U2 - 10.1016/S0014-5793(00)01827-5
DO - 10.1016/S0014-5793(00)01827-5
M3 - Article
C2 - 10922489
AN - SCOPUS:0034726004
VL - 478
SP - 159
EP - 165
JO - FEBS Letters
JF - FEBS Letters
SN - 0014-5793
IS - 1-2
ER -